GeoServer is an open source server that will allow you to connect your information to the Geospatial Web.
With GeoServer you can publish and edit data using open standards. Your information is made available in a large variety of formats as maps / images or actual geospatial data.
GeoServer's transactional capabilities offer robust support for shared editing. GeoServer can be used to connect from legacy databases to diverse clients.
The application comes with support for WFS-T and WMS open protocols from the OGC to produce JPEG, PNG, SVG, KML/KMZ, GML, PDF or Shapefiles.
The portable version of the software can be found here.

What's New in This Release:
Bug:
· [GEOS-4014] - /servlet-api-2.4.jar) - jar not loaded.
· [GEOS-5210] - EPSG:21781 (CH1903) converts wrong to EPSG:4326 (WGS84)
· [GEOS-5636] - Adding a WMS cascaded layer from a GeoServer using Inspire extensions is very slow and leads to an Exception
· [GEOS-5784] - Missing release/ext-xslt.xml causes assembly:attached to fail
· [GEOS-5790] - Bad WFS request causes GeoServer to stop responding to certain requests types
· [GEOS-5803] - "mode" not "storage" used in default monitor.properties
· [GEOS-5804] - Adding XSLT module without proper configuration results in exceptions for normal GML requests
· [GEOS-5811] - Changing the SSL Port has no effect for filter chains already restricted to SSL requests
Improvement:
· [GEOS-5693] - Make app-schema joining the default behavior
· [GEOS-5791] - Graduate the INSIPIRE module to extension status
· [GEOS-5801] - Add option for wicket file browser not to expose other locations on the file system